<div class="body">
  <p-dropdown 
    [options]="cities1" 
    [(ngModel)]="selectedCity1" 
    placeholder="Select a City" 
    filter="true" 
    [autoWidth]="false"
    (onChange)="onSelectedItemChange()"></p-dropdown>

  <p-dropdown 
    [options]="cities2" 
    [(ngModel)]="selectedCity2" 
    optionLabel="name" 
    placeholder="Select a City" 
    (onChange)="onSelectedItemChange2()"></p-dropdown>
    <form>
      <div class="form-group">
        <label for="exampleInputEmail1">Email address</label>
        <input type="email" class="form-control" id="exampleInputEmail1" aria-describedby="emailHelp" placeholder="Enter email">
        <small id="emailHelp" class="form-text text-muted">We'll never share your email with anyone else.</small>
      </div>
      <div class="form-group">
        <label for="exampleInputPassword1">Password</label>
        <input type="password" class="form-control" id="exampleInputPassword1" placeholder="Password">
      </div>
      <div class="form-check">
        <input type="checkbox" class="form-check-input" id="exampleCheck1">
        <label class="form-check-label" for="exampleCheck1">Check me out</label>
      </div>
      <button type="submit" class="btn btn-primary">Submit</button>
    </form>
</div>
